@article{01142952,
title = {Remarks on the smoothness of the },
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {54},
year = {1997},
pages = {381-391},
zbl = {0896.35102},
language = {en},
url = {http://dml.mathdoc.fr/item/01142952}
}
Beirão da Veiga, H. Remarks on the smoothness of the . Portugaliae Mathematica. Nova Série, Tome 54 (1997) pp. 381-391. http://gdmltest.u-ga.fr/item/01142952/